Northern lights may be visible Sunday across U.S.

The National Oceanic and Atmospheric Administration has issued a "severe" geomagnetic storm watch for Sunday into Monday. As a result of the storm, the Northern lights may be visible across the United States Sunday night, with states as south as Alabama and southern California being able to views the colorful phenomenon. Rob Steenburgh, science and operations officer at the NOAA Space Weather Prediction Center, joins LiveNOW's Austin Westfall to break down what a geomagnetic storm is, why it's labeled "severe," and what the public can expect to experience.